Heat-insulated receptacle



H. IVI. SMITH. HEAT INSULATED RECEPTACLE.

APP! ICATION FILED SEPT4 30, 1913. Lgl ,13% Patented OG t. l0, 1922.

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H. M. SMITH. HEAT INSULATED RECEPTACL APPLICATION FILED SEPT. 30

Patented Oct. l0, 1922,.

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HERBERT M.` SMITH, F GREAT BARRINGTON, MASSACHUSETTS, ASSIGNOR T0 STANLEY INSULATING COMPANY, OF GREAT BARRINGTON, MASSACHU- SETTS, A CORPORATION 0F MAINE.

HEAT-INSULATED RECEPTACLE.

Application tiled September 30, 1918. Serial No. 256,285.

To all whom t 'may concern:

Be it known that l, 'HERBERT Minis SMITH, a citizen of the United States, residing at Great Barrington in the county of Berkshire and State of Massachusetts, have invented certain new and useful Improvements in Heat-Insulated Receptacles, of which the following is a specification.

his invention relates to heat-insulated receptacles of the general character shown in the United States patent to William Stanley No. 1,071,817, and particularly to an embodiment of the same in the form of a container for food or the like which is to be provided with means for carrying it on the person.

@ne of the objects of the invention is to provide a device of this character which may be readily assembled and disconnected from an outside casing when desired.

Another object is to provide an improved form of stopper or closure for a receptacle of this kind as well as convenient means for locking the stopper in closing position and without affecting its ready removal.

Other objects of the invention, more or less broad than those stated above, together with the advantages inherent, will appear from the following description of the elements, combinations, arrangements of parts and applications of principles constituting the invention; and the scope of protection contemplated will appear from the claims.

ln the accompanying drawings which are to be taken as a part ofthis specication and in which l have shown a merely preferred form of embodiment of the invention, Figure 14 is a central vertical cross sectional View of a device embodying the invention; Figure 2 is a top plan view of the same; Figure 3 is a fragmentary view similar to Figure 1 and illustrating a modification; Figure t is a sectionalview showing in enlarged detail certain of the parts of Figure 3.

Referring to the numerals on the drawings, there'is shown at 5 the inner container of a heat-insulated receptacle, of which 6 is the surrounding outer shell, the inner container and the shell 6 being spaced apart and the space 7 constituting the vacuous space which is to be filled with linely divided insulating material. The shells 5 and 6 are connected together as `by welding at the neck of the complete receptacle, this joint being indicated at 8, and the bottom closure comprises a plate 9 having adjacent its edges a bent spring portion 10 and a downwardly turned flange 11. After the vacuous Space 7 has been filled with compressed nely divided insulating material in the manner stated in a co-pending application of mine, the closure member 9 is inserted in-l side the lower end of the outer shell 6, as illustrated in Figure 1. Because of its shape, this bottom plate 9 is readily introduced into position and pushed forward up against 'the insulating material, but does not readily movebackwardly. Preferably centrally this plate 9 ieprovided with a dished portion 12, perforated as at 14. ln this dished portion 12 l place a quantity of steel wool or the like, for a purpose hereinafter explained. The plate 9 bein in position asecond plate 15 having an annu ar flange 16 is inserted, and this flange 16 is vwelded to the adjacent wall of the outer' shell (i. The purpose of using the first bottom plate 9 is to hold the insulating material in place, and the ila-nge 11 serves to prevent the dropping down of particles of insulating material which might interfere with the operation of Weldin the flange 16 of the lower bottom plate. fter the bottom plate 9 isy in position the surface of the shell 6 below the flange 11' is cleaned to make ready for the welding to it of the flanged part 16 of the second bottom plate 15. The second bottom plate 1s provided with a dished portion 17 centrally arranged and corresponding to the dlshed portion 12 of the first bottom plate, and opening into this dished portion 17 there is a tube 18 for connection to a vacuum pump whereby a partial vacuum is created in the insulating material which fills the vacuous space 7, between and around the particles thereof. rlhe mass of steel Wool la, while permitting the removal of air from the vacuous space, prevents the disturbance of the insulatingmaterial itself and 1ts removal through the pump.

The heat-insulated receptacle thus described is adapted to be upwardly inserted into an outside casing which is indicated by the reference character 20. This may have any desired shape in cross section, and in the drawings it is shown afs square, the outer the casing 20.

surface of the body portion ofthe shell' 6 being substantially tangent to the walls of T is casing 20 comprises a body portion or shell with a top 2.1 connected to it as by welding along the line 22. This top is provided with a central'opening, defined by a shouldered part 24, in which 1s seated and held as by welding a ring 25 provided with a thread 26 and withhan offset threaded portion 27 of larger diameter than the threaded portion 26. The threaded portion 27 is for engagement with the corresponding threads ofaring member 28 which is welded at the endof the shell 6 where the latter is welded to the end of the shell 5. The result of this construction is that the receptacle comprising the shells 5 and 6 may be inserted through the open bottom of the casing 20 and the ring 28 screwed into the threaded section 27 ofthe ring 25 until the fiange 29 of the ring 28 contacts with the lower edge of the ring 25. The threaded section 26 of the ring 25 is for engagement with the correspondingly threaded periphery of a bridge lock rlng 30, having an operating bar 31 and having also mutilated thread sections 32 cooperating with corresponding mutilated sections of the thread portion 26 of ring 25. This familiar construction need not be further described, except to say that it enables the operator to lock two threaded parts together or unlock them with a partial rotation of one of the threaded members. This bridge lock ring 30 is for the control of a stopper member indicated generally at 34 in Figure 1. This stopper member may be made hollow as shown with a number of laminas of fibre or fabric of good heat-inn sulating quality indicated by the reference character 35 with an outer coating or covering 36 of vulcanized rubber or other material having good heat-insulating ualities and adapted to make a good liqui -ti ht joint. As shown, the stopper 34 is conica and the wall of the inner container 5 into which it fits is correspondingly inclined so that the further the stopper is driven in the better the seal. The stopper is completed 'by a cover 37 at the top which is bent as shown to give it additional resiliency, and from the centre of this spring cover 37 extends a post 38 at the top of which is a reduced pin 39 which passes through the centre 40 of the bridge lock bar 31 and is held in po.

sition by means of a cross pin 42 which passes through the end of the pin above the bar 31. The result of this construction is that .the stopper member 34 may be rotated relatlvely to the bridge lock ring 30, but as the bridge lock ring moves up or down relatively to the ringr 25, the stopper must move wlth it. In order to prevent accidental loss of the stopper in use, I may provide a cham 44 connected to the post 38 at one end and having its other end suitably secured to the casing 20 as indicated by the numeral 45. I regard the rovisin .of the spring cover 37 as of considerable importance, because it givesthe stopper a spring-pressed fit in the mouth of the bottle or receptacle.

The bottom of the complete receptacle is preferably constituted by a bottom member 54 which ma be soldered in position inside the lower en of the casing 20, the casing 20 extending for that urpose somewhat below the end of the heat-insulated receptacle within'it, and this bottom member 54 may have a downwardly extending flan 55 whereby it is soldered to the surrounding wall of the casing 20 and may be upset to form a bead 56 in which lies a reinforcing wire 57. If desired an additional outside finishing and stren thening ring 58 may also be provided. y In igures3 and 4 I have illustrated a modified form of connection between the heat-insulated receptacle and the casing 20 and have dispensed with the se arately formed rings 25 and 28. To this en the top plate 21 of' the casing 20 surrounding the central opening thereof is formed with two parallel but offset threaded portions indicated respectively at 60 and 61, the threaded portion 6() being of larger diameter than the threaded portion 61, and the two being separated by a shoulder 62. These threaded portions are formed in the metal by a suitable die or otherwise. In this instance the upper end of the neck portion of the shell 6, just below where it is welded to the shell 5 at the point 64, is also provided with a threaded portion 65 impressed in the metal by means of dies or the like. This threaded portion 65 is to engage with ,the threaded portion 61 of the top piece 21, and the threaded portion 60 of the top member 21 engages wlth the threaded edge 66 of a stopper 67. In this instance the stopper com.

rises a cup-shaped metallic member 68 having a flange 69 provided with mutilated threads similar to those on the bridge lock ring 30, 'and the threads of the thread portion 60 of the top piece 21 are likewise mutilated to cooperate with the mutilated threading of the stopper so that the stopper ma be put in position and locked or unloc ed by a partial rotation thereof. The stopper is faced with a rubber facing or the like 36 as in the form previously described, and if desired, in order to increase the insulating effect, the stopper may have a cover plate 70 to define a dead air space between it and the bottom of the stopper. A crossbar 71 will also preferably be provided for the same purpose as the bridge lock 31 shown in Figures 1 and 2.

In the form of device shown in Figure 3 the heat-insulated receptacle is inserted from the bottom of the casing as in the other form and the'threaded end 65 of the receptacle screwed into the threaded section 61 of the top piece until the Aouter end of the threaded section' 6l rests against the outwardly flaring section of the shell 6. The several rings 25 and 28 are dispensed with and consequently the number of parts and difficulty of assem- Vbly are very much reduced. Likewise, the

stopper construction which is shown in Fi ure 3, is somewhat simpler because the means for controllingthe stopper is integral with the stopper instead of being 'a separate part as in Figure `1.

It will be evident that other departures may be made from the specific embodiments of my invention shown in the drawings without departing from the scope of the proteotion which I have marked out in the appended claims.

I claim:

l. A device of the'kind described comprising an outer casing having a central aperture in its top defined by a depending portion provided with two sets of threads on different diameters respectively, and an open-mouthed receptacle within the casing having its mouth portion in threaded engagement with one of the threaded portions aforesaid of the casing, the mouth of the receptacle having threaded engagement with the other of the threaded portions of the casing aforesaid.

2. A device of the kind described comprising a casing provided with a central aperture in its top defined by a depending portion of the casing having two sets of threads formed on different diameters in the material of the casing and an open-mouthed receptacle within the casing having its mouth portion in threaded engagement with the lowermost one of the sets of threads of the casing, aforesaid, and having a shoulder abutting against the lower edge of said threaded part of the casing. Y

3. A device of the kind described comprising a casing provided with a central aperture in -its top defined by a depending portion of the casing having two sets of threads formed on different diameters in the material of the casing and an open-mouthed receptacle within the casing having its mouth portion in threaded engagement with the lowermost one of the sets of threads of the casing, aforesaid, and .having a shoulder abutting against' the lower edge of said threaded part of the casing, and a stopper for the mouth of the receptacle havin threaded engagement with the other threaded portion of the casing aforesaid.

4. A device of the kind described comprising an outer casing having an aperture in its upper end, an open-mouthed receptacle arranged within the casing with its opening in registry with the aperture in the casing, a stopper for the mouth of the receptacle, and means secured within the casing aperture and a stopper for and engageable with the stopper for holding 'the sa1d stopper within the mouth of the receptacle.

5. A device of the kind described comprising an outer casing having an aperture in its upper end, an open-mouthed receptacle arranged within the casing with its opening in registry with the aperture in the Casing, a stopper for the mouth of the receptacle, and means secured within the casing aperture and peripherally engaging the stopper for maintaining the latter pressed within the mouth of the receptacle.

6. A device of the kind described comprising an outer casing having an aperture in its upper end, an open-mouthed 'receptacle arranged within the casing with its opening in registry with the aperture in the casing, a stopper for the mouth of the receptacle, and means secured within the casing aperturel and having a-yieldable member associated therewith, said member arranged for engagement with the stopper whereby'said stopper is resiliently pressed within the mouth of the receptacle.

7. A. receptacle having a mouth with tapered inner walls and a cup-shaped stopper for the mouth of the receptacle, a bridge lock, and means interposed between the bridge lock and the stopper peripherally engaging the latter for maintaining the stopper resiliently pressed in the mouth.

8. A receptacle having a mouth with tapered inner walls and a cup-shaped stopper for the mouth of the receptacle, a bridge lock, and a resilient means interposed between the bridge lock and` the stopper peripherally engaging the upper edge of the latter for maintaining the stopper resiliently pressed in the mouth.

t". A receptacle of the kind described comprising an inner container and an outer shell, the outer shell extending below the inner container, a flanged bottom piece litting withinthe outer shell below the inner container, and a second bottom piece within the outer shell below the first bottom piece against which the fiange of the first bottom piece is adapted to rest.

10. A receptacle of the kind described comprising an inner container and an outer shell, the outer shell extending below the inner container, a bottom piece loosely tting within the outer shell below the inner container and a second bottom piece rigidly g secured within the outer shell and against which the first mentioned bottom piece is adapted to rest.

11. A receptacle of the kind described comprising an inner container and an outer shell, the outer shell extending below the inner container, a iianged bottom piece fitting within the outer shell below the inner container, and a second flanged bottom plece secured within the outer shell :for

maintaining the rst mentioned bottom piece in position.

12. A device of the kind described comrsing an outer casing having an aperture 1n its top defined by a depending portion provided with two sets of threads, an openmputhed receptacle within the easing having its mouth portion in threaded lengagement with one of the threaded portions aforesaid of the casing, and a stopper for the mouth of the receptacle having threaded engagement with the other of the threaded portions of the casing.

13. A device of the kind described comprising an outer casing having an aperture in its top defined by ai depending portion provided with two sets of threads on different diameters, an open-mouthed receptacle Within the casing having its mouth portion in threaded engagement with the largest diametered set of threads and a stopper for the mouth of the receptacle having threaded engagement with the other set of threads.

In testimony whereof I affix my signature.-

HERBERT M. SMITH. 

